#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int main()
{
	int x = 0;
	int y = 0;
    scanf("%d",&x);
	if (x > 0)
		y = -1;
	else if (x == 0)
		y = 0;
	else
        y = 1;
	printf("%d", y);
	return 0;
}